low beams not working all ohter lights work on 2003 Ford Taurus

when i turn on the head lights all other lights work but not the low beams checked both power box under the hood and in the car all fuses working replaced pass side head light same thing low beams not working

It appears that you have done about all you can do without a wiring diagram and a volt/ohm meter. These will be needed to diagnose the electrical circuits related to the low beam headlights. You may find a wiring diagram online or in a repair manual!